Lard-lamp



L. A. STOCKWELL.

Lamp.

Patented Sept. 13, 1853.

UNITED STATES PATENT OFFICE.

LEONARD A. STOCKWELL, OF BATAVIA, NEW YORK.

LARD-LAMP.

Specification of Letters Patent No. 10,022, dated September 13, 185.3.

T 0 all whom it may concern:

Be it known that I, LEONARD A. STOCK- WELL, of Batavia, in the county of Genesee and State of New York, have invented a new and useful Improvement in Lard-Lamps, which I style the Caloric Lard-Lamp; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, of which- Figure 1 is a perspective View of a lard lamp with my improvements attached. A is the top piece as seen in Fig. 2 and Fig. 4 to hold the wick in the place at the top of the lamp. Unscrew or take off A and you have Fig. 5. This is the outer covering of the lamp which unscrews or takes off atthe bottom of itself. It also fits on close on the top of the heater and cup 0, as seen by unscrewing the outer covering which will exhibit a, as seen in Fig. 3. The outer cover prevents the lard or tallow from greasing the outside of the lamp and by unscrewing this outside piece the heater 0 can be filled with less difliculty than in ordinary lard lamps.

C, becomes a powerful heater and will melt lard and even tallow with a rapidity superior to other lamps, the air chamber intervening between the heater and the cover prevents the outside from being uncomfortably warm to the hand, and serves to contain and warm the air which sustains the combustion of the lard or tallow.

The cup 0, is surrounded by the cover Fig. 5, the space between which and under a, is called the air chamber and marked in the drawings d.

When the wick is lighted the heat is conveyed from it down the tube a, and over the bottom and sides of the cup 0, and serves to heat the air in the air chamber and to melt the lard or other substance in the cup 0. As the heated air rises and passes from the chamber and to the flame its place in the chamber is supplied by cooler air, by means of the holes f, f, the lower part of tube 6, and the holes at the bottom of the lamp.

What I claim as my invention and desire to secure by Letters Patent is- The combination of the reservoir of a lamp for burning lard or tallow, with an outer covering so arranged as to form an air chamber surrounding the reservoir in the manner and for the purposes herein mentioned.

LEONARD A. STOCIGVELL.

In presence of- WM. G. BRYAN, J OHN MUNRO, Jr. 

